Stump-burning device.



W. H. JONES.

STUMP BURNING DEVICE.

APPLlCATION FILED APR. 24. I9l6.

Patented J 11116 26, 191 7.

4 i l A i 3 WILLIAM H. JONES, 0F OTTUMWA, IOWA.

STUMP-BURNING- DEVICE.

\ Specification of Letters Patent.

Patented June 26, 191?.

Application filed April at, 1916. Serial No. 93,245.

To all whom it may concern:

Be it known that 1, WILLIAM. H. Jones, a citizen of the United States, residing at Ottu'mwa, in the county of Wapello and State of Iowa, have invented a new and use" rapidly and more economically than be fore. The following is a specification of my invention in which Figure 1 is a view of a complete machine.

Fig. 2 is a section of the pipe that carries the air blast and discharges it against the stump being burned, and wherein the nozzle of this pipe differs slightly from that shown in Fig. 1.

Fig. 3 is a section of the device nearest the stump being burned, as shown in Fig. 1 espe cially showing the log of wood used as fuel, and the means ofsupporting it and feeding it automatically against the stump as it is burned away. The pipe that conducts the blast of air is omitted in this view to avoid obscuring other parts of the drawing.

Fig. 4 is a front view of the plate on the end of the pipe that conducts the. air blast.

against the stump as shown in Fig.- 2.

I Fig. 5 is a sectional view of the nozzle as shown in Fig. 2 as it would appear if it was cut through the center.

Fig. 6 is a view of the plate shown in Fig. 4 the back of it being shown in this view while the front of it is shown in Fig. 4.

Similar numbers refer to similar parts throughout the several views.

The device is rendered portable by mounting the heavier parts on a truck or wagon 10.

An internal combustion engine, used as a source of power is shown at 1,1.

A fan blower is used and shown at 12. Connected with the blower is'a hopper 13, used to containthefuel as it is being used. Hopper 13 is supported by rods 28. A valve is shown at 23,, onpipe 14, which carries the air blast from the blower.

Pipe 15, is a branch of pipe 14, and conducts the air blast to the stump being burned.

As manybranch pipes as may be desired can be connected with pipe 14.

In Fig. 2, pipe 16, is a branch from pipe 14, and conducts an air blast. This pipe is of metal and is supported by four legs shown ati19. The two legs nearest the stump are much shorter than the two legs farthest from the stump, the result being that this pipe is supported with the end next to the stump much lower than the other end of it.

These legs support said pipe and are loosely connected with it. A convenient connection being shown, the legs being forked at the top in which the pipe lies loosely. The feet 9f these legs are separated some little distance, the top of them coming together as shown, prevents lateral movement of the pipe. These legs should lean toward the stump at considerable angle, which causes pipe 16 to have an end thrust which keeps the pipe in proper relation .to the stump as it is burned away.

On the end of pipe 16 as shown in Fig. 5 is a ball which fits loosely into plate 17 Fig. 6 and is kept from coming out of said socket in plate 17, by plate 22 which is secured to plate 17. This ball and socket joint affords the means of allowing plate 17 to adjust itself to the stump should it be burned unevenly.

Plate 1? is provided with studs 18 Fig. 5

plate and the stump will be greater on the lower side of the plate than it is on the upper side of the plate, with the resultthat more of the flame produced in burning the stump will escape on the lower side than escapes on the upper side, this will result in burning the stump lower than it might otherwise be burned.

A feeding device is shown in connection with the blower 12 at 13. Rotatably mounted near the outlet of this hopper is shaft 29. Secured to'this shaft and moving with it is corrugated wheel 25. Wheel 2% is also secured to this shaft and revolves with it. The periphery of 24: is pressed against the fan shaft shown at 26 which causes it to revolve as the fan shaft revolves. A fuel controlling valve is shown at 5.37.

In operation, pulverized fuel is put into -gated wheel 25 revolving feeds the fuel out of thehop'per and into the open spacein as follows.

hopper- 13 and valve 27 is adjusted to feed out the required. amount of fuel.- Corruthe side of the blower case, where it is taken up by the air, and thoroughly mixed with air and carried to the stump where it is burned with intense heat.

In the art of stumpburning it is found that many stumps are green or saturated with water which makes it difficult toburn them, while others are dry and burn comparatively easy. In order to meet all conditions a slight difference in the mechanism of a stump burner is necessary. In some instances a pole or small. log of wood will furnish all the additional fuel necessary, such as is shown at 20.

In burning stumps I proceed as follows. Earth is removed from the side of the stump as low down as it is desired to burn it. A. fire is started against the stump, and the device as shown in Fig. is put in operation and a blast of air from the blower is turned onto the fire and stump. If the stump is so green or wet that it does not burn satisfactorily in this manner, this mechanism is removed and that shown in Fig. 3 is tried. If this does not accomplish the burning of the stump satisfactorily the air blast containing pulverized fuel is applied as shown in Fig. 1. These three elements, the air blast, log of wood and pulverized fuel will be found sufficient to burn any thing that is combustible.

The log of wood and the pipe that conducts the air blast are kept in proper relation to the stump as they are burned away The log of wood has an end thrust toward the stump due to the slant of the legs that support it toward the stump, which causes the end of the log of wood to rest against the stump notwithstanding the end of the log of-wood and stump are being continually burned away. The pipe that conducts the air blast as shown in Fig. 1 is automatically kept in proper relation to the stump by being loosely secured to the log of wood and moving with it as the stump is'burncd away. A convenient way to "secure pipe 16. to the log of wood 20, is by chains as shown at 21. As the log of wood moves toward the stump faster than pipe 16, moves due to the burning away of the end of it, these supports slip on the pipe and thereby automatically keep the log of wood and pipe in proper relation to the stump.

In such instances as it is desirable to use both the log of wood and the air blast it will be found best to change the form of 1 the nozzle on the .end of the pipe that conducts the air blast, from the form shown in Fig. 2 to the form shown in Fig. 1. The nozzle of this pipe being formed in this instance by cutting away the lower side, and allowing'the upper side to extend farther and rest against the stump, thereby preventing the closing of the endof the pipe by its being pushed against the stump. An additional advantage in this form of the nozzle, when using a log of wood is,that it permits the air blast and log of wood to be brought closer together.

Having described my invention and the manner of using it; what I claim as my in vention and desire to secure by Letters Patent is. p

1. In a device of the kind described; the combination of a source of power with a blower, adapted to produce a blast of air; a fuel feeding device, adapted. for feeding into said air blast pulverized fuel, a pipe adapted to conduct said airblast containing pulverized fuel from said blower to a stump and discharge it against the stump being burned, said pipe that conducts said air blast being supported at the end nearest the stump lower than it is at the end farthest from the stump; the supports to said pipe being loosely connected with it at their upper ends and separated one from the other at their lower ends. and leaning toward the stump at such an angle as to produce an end thrust toward the stump, substantially as shown. 1

2. In a device of the kind described; the combination of 'a log of wood, with a pipe, adapted to conduct'an air blast; said pipe and log of wood substantially parallel and supported with the end nearest to the stump lower than the end farthest from the stump; said supports being loosely connected with the log of wood and pipe at their upper end and separated at their lower end, and leaning toward the stump at such an angle as to produce an end thrust to the log of wood and pipe, substantially as shown.

8. In a device of the class described; the combination of a log of wood, with supports. said supports lower at the end nearest shown.'

, IVILLIAM H. JONES. Witnesses:

OPAL WILSON, W. W. Errs. 

